Berlin has a bizarre relationship with cleanliness. The city is gritty (the infamous "Berliner Schnauze"), yet German engineering offers exceptional sanitation. Modern "Scat Queens" in Berlin use medical-grade disinfectants and industrial steam cleaners. This clinical safety net allows the mental filth to be explored without the risk of bacterial infection (E. coli, Hepatitis A), which is the primary fear for new participants searching for this niche.